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Zirconium oxide toughened alumina ceramic sintered body
The present invention provides a sintered ceramic body having at least one surface, the sintered ceramic body comprising: a first crystalline phase comprising Al2O3 and from 8% to 20% by volume of a second crystalline phase comprising ZrO2 wherein the first crystalline phase is a continuous matrix and the second crystalline phase is dispersed in the continuous matrix wherein the sintered ceramic body has pores, wherein the pores have a maximum pore size of 0.1 [mu] m to 5 [mu] m as measured by SEM, and wherein the sintered ceramic body exhibits a coefficient of thermal expansion of 6.899 * 10 <-6 >/DEG C to 9.630 * 10 <-6 >/DEG C in a temperature range of 25 DEG C to 200 DEG C to 25 DEG C to 1400 DEG C as measured according to ASTM E228-17, wherein the sintered ceramic body has a relative density of 99% to 100% and a density change of 0.2% to less than 5% over a maximum dimension wherein the maximum dimension is 200 mm to 625 mm, and wherein Si is not present in the sintered ceramic body or it is present in the sintered ceramic body in an amount of 100 ppm or less.
本发明提供了一种具有至少一个表面的烧结陶瓷体，该烧结陶瓷体包含：包含Al2O3的第一结晶相和8体积％至20体积％的包含ZrO2的第二结晶相，其中该第一结晶相为连续基体，并且该第二结晶相分散在该连续基体中，其中该烧结陶瓷体具有孔，其中该孔具有如通过SEM测量的0.1μm至5μm的最大孔径，其中如根据ASTM E228‑17所测量，烧结陶瓷体在25℃‑200℃至25℃‑1400℃的温度范围内表现出6.899×10‑6/℃至9.630×10‑6/℃的热膨胀系数，其中该烧结陶瓷体具有99％至100％的相对密度并且在最大尺寸上具有0.2％至小于5％的密度变化，其中该最大尺寸为200mm至625mm，并且其中Si不存在于该烧结陶瓷体中或者其以100ppm或更少的量存在于该烧结陶瓷体中。
Zirconium oxide toughened alumina ceramic sintered body
The present invention provides a sintered ceramic body having at least one surface, the sintered ceramic body comprising: a first crystalline phase comprising Al2O3 and from 8% to 20% by volume of a second crystalline phase comprising ZrO2 wherein the first crystalline phase is a continuous matrix and the second crystalline phase is dispersed in the continuous matrix wherein the sintered ceramic body has pores, wherein the pores have a maximum pore size of 0.1 [mu] m to 5 [mu] m as measured by SEM, and wherein the sintered ceramic body exhibits a coefficient of thermal expansion of 6.899 * 10 <-6 >/DEG C to 9.630 * 10 <-6 >/DEG C in a temperature range of 25 DEG C to 200 DEG C to 25 DEG C to 1400 DEG C as measured according to ASTM E228-17, wherein the sintered ceramic body has a relative density of 99% to 100% and a density change of 0.2% to less than 5% over a maximum dimension wherein the maximum dimension is 200 mm to 625 mm, and wherein Si is not present in the sintered ceramic body or it is present in the sintered ceramic body in an amount of 100 ppm or less.
本发明提供了一种具有至少一个表面的烧结陶瓷体，该烧结陶瓷体包含：包含Al2O3的第一结晶相和8体积％至20体积％的包含ZrO2的第二结晶相，其中该第一结晶相为连续基体，并且该第二结晶相分散在该连续基体中，其中该烧结陶瓷体具有孔，其中该孔具有如通过SEM测量的0.1μm至5μm的最大孔径，其中如根据ASTM E228‑17所测量，烧结陶瓷体在25℃‑200℃至25℃‑1400℃的温度范围内表现出6.899×10‑6/℃至9.630×10‑6/℃的热膨胀系数，其中该烧结陶瓷体具有99％至100％的相对密度并且在最大尺寸上具有0.2％至小于5％的密度变化，其中该最大尺寸为200mm至625mm，并且其中Si不存在于该烧结陶瓷体中或者其以100ppm或更少的量存在于该烧结陶瓷体中。
Zirconium oxide toughened alumina ceramic sintered body
氧化锆增韧的氧化铝陶瓷烧结体
WALKER LARRY (author) / M J DOLON (author)
2023-07-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| European Patent Office | 2024